HD Aluminum Box Level, Number of 30 Vials 0, Number of 45 Vials 0, Number of Level Vials 1, Number of Plumb Vials 2, Top Read Top Read Window, Vial Material Acrylic, Vial Shape Barrel, Features Machined Gauging Edges, Removable End Caps, Cushioned Hand Grips, End Cap Type Removable End Caps, Magnet Type Not Applicable, Number of Magnets 0, Accuracy – Standard 0.29 Degrees , Frame Material Aluminum, Overall Length 48 in, Magnetic Nonmagnetic, Vial Types Included Level Vials, Plumb Vials